Monitorizing nitinol alloy surface reactions for biofouling studies
- 作者：C.Z. Dinu ; V.C. Dinca ; S. Soare ; A. Moldovan ; D. Smar ; ache ; N. Scarisoareanu ; A. Barbalat ; R. Birjega ; M. Dinescu ; V. Ferrari DiStefano
- 关键词：NiTi thin films ; Hydrogen temporary alloying element ; Surface analyses ; Biofilms ; Biofouling
- 刊名：Applied Surface Science
- 出版年：2007
- 期刊代码：6_01694332
- 类别：ms
- 出版时间：31 July 2007
- 卷：253
- 期：19
- 页码：7719-7723
- 文件大小：685 K
摘要
Growth and deposition of unwanted bacteria on implant metal alloys affect their use as biomedical samples. Monitoring any bacterial biofilm accumulation will provide early countermeasures. For a reliable antifouling strategy we prepared nitinol (NiTi) thin films on Ti-derived substrates by using a pulsed laser deposition (PLD) method. As the microstructure of Ti-alloy is dictated by the tensile strength, fatigue and the fracture toughness we tested the use of hydrogen as an alloying element. X-ray diffraction (XRD), scanning electron microscopy (SEM) and atomic force microscopy (AFM) investigated the crystalline structure, chemical composition and respectively the surface morphology of the nitinol hydrogen and hydrogen-free samples. Moreover, the alloys were integrated and tested using a cellular metric and their responses were systematic evaluated and quantified. Our attractive approach is meant to select the suitable components for an effective and trustworthy anti-fouling strategy. A greater understanding of such processes should lead to novel and effective control methods that would improve in the future implant stability and capabilities.